Question

answer me very very fast ​

Answer 1

a)-1+2-3=-2

b)-2-6-18=-26

Answer 2

$\large \colorbox{pink}{x = -1, y = 2, z = -3}$

$\large\boxed{(a) x + y + z}$

- 1 + 2 - 3

1 - 3

$\huge \frak \blue{= - 2}$

$\large \boxed{(b) 2x - 3y + 6z}$

2 x - 1 - 3 x 2 + 6 x - 3

- 2 - 3 x 2 + 6 x - 3

- 2 - 6 + 6 x - 3

- 2 - 6 - 18

- 8 - 18

$\huge \frak \blue{= - 26}$